All MOSEK licenses are floating. That means if you install one license on one computer the computer can act as a license server for itself.

In reality it will often be easier and more economical to use few shared license servers rather than one per MOSEK installation. Each server would require at least one license, and often this would mean that each license is free most of the time.

A best practice is to employ one or two license servers for each site, where 2 license servers are employed if licenses for development and production should be kept separate.